/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:41:56,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:41:56,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:41:56,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:41:56,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:41:56,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:41:56,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:41:56,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:41:56,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:41:56,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:41:56,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:41:56,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:41:56,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:41:56,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:41:56,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:41:56,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:41:56,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:41:56,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:41:56,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:41:56,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:41:56,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:41:56,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:41:56,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:41:56,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:41:56,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:41:56,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:41:56,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:41:56,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:41:56,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:41:56,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:41:56,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:41:56,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:41:56,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:41:56,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:41:56,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:41:56,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:41:56,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:41:56,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:41:56,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:41:56,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:41:56,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:41:56,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:41:57,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:41:57,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:41:57,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:41:57,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:41:57,005 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:41:57,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:41:57,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:41:57,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:41:57,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:41:57,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:41:57,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:41:57,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:41:57,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:41:57,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:41:57,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:41:57,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:41:57,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:41:57,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:41:57,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:41:57,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:41:57,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:41:57,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:41:57,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:41:57,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:41:57,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:41:57,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:41:57,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:41:57,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:41:57,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:41:57,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:41:57,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:41:57,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:41:57,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:41:57,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:41:57,548 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:41:57,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-27 21:41:57,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/247a05719/a3321299ed9646b099209122af98e4cf/FLAG033c0c85f [2020-08-27 21:41:58,220 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:41:58,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-27 21:41:58,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/247a05719/a3321299ed9646b099209122af98e4cf/FLAG033c0c85f [2020-08-27 21:41:58,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/247a05719/a3321299ed9646b099209122af98e4cf [2020-08-27 21:41:58,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:41:58,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:41:58,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:41:58,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:41:58,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:41:58,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:41:58" (1/1) ... [2020-08-27 21:41:58,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f08780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:58, skipping insertion in model container [2020-08-27 21:41:58,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:41:58" (1/1) ... [2020-08-27 21:41:58,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:41:58,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:41:59,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:41:59,204 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:41:59,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:41:59,326 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:41:59,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59 WrapperNode [2020-08-27 21:41:59,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:41:59,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:41:59,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:41:59,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:41:59,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... [2020-08-27 21:41:59,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... [2020-08-27 21:41:59,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... [2020-08-27 21:41:59,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... [2020-08-27 21:41:59,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... [2020-08-27 21:41:59,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... [2020-08-27 21:41:59,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... [2020-08-27 21:41:59,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:41:59,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:41:59,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:41:59,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:41:59,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:41:59,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:41:59,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:41:59,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:41:59,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:41:59,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:41:59,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:41:59,516 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:41:59,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:41:59,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:41:59,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:41:59,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:41:59,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:41:59,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:41:59,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:41:59,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:41:59,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:41:59,519 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:41:59,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:41:59,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:41:59,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:41:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:41:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:41:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:41:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:41:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:41:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:41:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:41:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:41:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:41:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:41:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:41:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:41:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:41:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:41:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:41:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:41:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:41:59,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:41:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:41:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:41:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:41:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:41:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:41:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:41:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:41:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:41:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:41:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:41:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:41:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:41:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:41:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:41:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:41:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:41:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:41:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:41:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:41:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:41:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:41:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:41:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:41:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:41:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:41:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:41:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:41:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:41:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:41:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:41:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:41:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:41:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:41:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:41:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:41:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:41:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:41:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:41:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:41:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:41:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:41:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:41:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:41:59,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:41:59,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:42:00,718 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:42:00,719 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:42:00,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:00 BoogieIcfgContainer [2020-08-27 21:42:00,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:42:00,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:42:00,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:42:00,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:42:00,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:41:58" (1/3) ... [2020-08-27 21:42:00,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdb3157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:00, skipping insertion in model container [2020-08-27 21:42:00,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:41:59" (2/3) ... [2020-08-27 21:42:00,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdb3157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:00, skipping insertion in model container [2020-08-27 21:42:00,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:00" (3/3) ... [2020-08-27 21:42:00,741 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-08-27 21:42:00,753 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:42:00,765 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:42:00,785 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:42:00,812 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:42:00,812 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:42:00,812 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:42:00,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:42:00,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:42:00,813 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:42:00,813 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:42:00,813 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:42:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-27 21:42:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-27 21:42:00,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:00,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:00,854 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:00,861 INFO L82 PathProgramCache]: Analyzing trace with hash 580316159, now seen corresponding path program 1 times [2020-08-27 21:42:00,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:00,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210445048] [2020-08-27 21:42:00,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,545 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:42:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:42:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:01,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210445048] [2020-08-27 21:42:01,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:01,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:42:01,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172196774] [2020-08-27 21:42:01,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:42:01,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:01,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:42:01,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:42:01,675 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-27 21:42:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:02,935 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2020-08-27 21:42:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:42:02,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-27 21:42:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:02,957 INFO L225 Difference]: With dead ends: 318 [2020-08-27 21:42:02,957 INFO L226 Difference]: Without dead ends: 172 [2020-08-27 21:42:02,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:42:02,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-27 21:42:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2020-08-27 21:42:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-27 21:42:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-27 21:42:03,066 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 46 [2020-08-27 21:42:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:03,067 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-27 21:42:03,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:42:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-27 21:42:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-27 21:42:03,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:03,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:03,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:42:03,072 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash -2039927443, now seen corresponding path program 1 times [2020-08-27 21:42:03,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:03,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775421091] [2020-08-27 21:42:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,480 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:42:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:42:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:03,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775421091] [2020-08-27 21:42:03,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:03,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:42:03,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595067852] [2020-08-27 21:42:03,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:42:03,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:03,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:42:03,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:42:03,588 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2020-08-27 21:42:04,045 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:05,040 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-08-27 21:42:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:42:05,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-27 21:42:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:05,044 INFO L225 Difference]: With dead ends: 247 [2020-08-27 21:42:05,045 INFO L226 Difference]: Without dead ends: 156 [2020-08-27 21:42:05,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:42:05,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-27 21:42:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-27 21:42:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-27 21:42:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-27 21:42:05,087 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-08-27 21:42:05,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:05,088 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-27 21:42:05,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:42:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-27 21:42:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:42:05,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:05,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:05,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:42:05,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:05,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:05,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987703, now seen corresponding path program 1 times [2020-08-27 21:42:05,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:05,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873155148] [2020-08-27 21:42:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,526 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:42:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:42:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:05,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873155148] [2020-08-27 21:42:05,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:05,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:42:05,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827103843] [2020-08-27 21:42:05,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:42:05,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:05,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:42:05,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:42:05,699 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 8 states. [2020-08-27 21:42:06,147 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:06,519 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:06,825 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:07,137 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:08,525 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2020-08-27 21:42:08,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:42:08,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-27 21:42:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:08,529 INFO L225 Difference]: With dead ends: 260 [2020-08-27 21:42:08,530 INFO L226 Difference]: Without dead ends: 156 [2020-08-27 21:42:08,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-27 21:42:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-27 21:42:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-27 21:42:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-27 21:42:08,570 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 52 [2020-08-27 21:42:08,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:08,570 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-27 21:42:08,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:42:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-27 21:42:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-27 21:42:08,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:08,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:08,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:42:08,573 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:08,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:08,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1745786735, now seen corresponding path program 1 times [2020-08-27 21:42:08,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:08,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760748496] [2020-08-27 21:42:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:08,926 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:08,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:42:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:09,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:09,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:42:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-27 21:42:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:09,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760748496] [2020-08-27 21:42:09,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:09,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:42:09,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66933039] [2020-08-27 21:42:09,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:42:09,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:09,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:42:09,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:42:09,050 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 6 states. [2020-08-27 21:42:09,410 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:10,789 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:11,563 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-08-27 21:42:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:42:11,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-27 21:42:11,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:11,568 INFO L225 Difference]: With dead ends: 365 [2020-08-27 21:42:11,568 INFO L226 Difference]: Without dead ends: 261 [2020-08-27 21:42:11,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:42:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-08-27 21:42:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 218. [2020-08-27 21:42:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-27 21:42:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 245 transitions. [2020-08-27 21:42:11,618 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 245 transitions. Word has length 65 [2020-08-27 21:42:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:11,618 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 245 transitions. [2020-08-27 21:42:11,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:42:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 245 transitions. [2020-08-27 21:42:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-27 21:42:11,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:11,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:11,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:42:11,621 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:11,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:11,621 INFO L82 PathProgramCache]: Analyzing trace with hash 189412453, now seen corresponding path program 1 times [2020-08-27 21:42:11,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:11,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942221913] [2020-08-27 21:42:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:11,926 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:42:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-27 21:42:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 21:42:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:12,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942221913] [2020-08-27 21:42:12,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:12,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:42:12,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107388121] [2020-08-27 21:42:12,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:42:12,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:12,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:42:12,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:42:12,105 INFO L87 Difference]: Start difference. First operand 218 states and 245 transitions. Second operand 11 states. [2020-08-27 21:42:12,799 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:13,120 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:13,428 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:14,256 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:14,558 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:14,861 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:15,179 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:16,367 INFO L93 Difference]: Finished difference Result 456 states and 540 transitions. [2020-08-27 21:42:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:42:16,369 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-27 21:42:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:16,372 INFO L225 Difference]: With dead ends: 456 [2020-08-27 21:42:16,372 INFO L226 Difference]: Without dead ends: 262 [2020-08-27 21:42:16,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:42:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-27 21:42:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2020-08-27 21:42:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-27 21:42:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2020-08-27 21:42:16,424 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 79 [2020-08-27 21:42:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:16,425 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2020-08-27 21:42:16,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:42:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2020-08-27 21:42:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-27 21:42:16,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:16,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:16,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:42:16,427 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:16,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:16,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1196790941, now seen corresponding path program 1 times [2020-08-27 21:42:16,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:16,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266822149] [2020-08-27 21:42:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,811 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:42:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-27 21:42:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 21:42:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:16,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266822149] [2020-08-27 21:42:16,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:16,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:42:16,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039360829] [2020-08-27 21:42:17,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:42:17,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:42:17,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:17,001 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand 12 states. [2020-08-27 21:42:17,560 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:17,930 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:18,238 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:18,527 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:19,134 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:20,249 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:20,630 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:20,943 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:21,251 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:21,638 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:21,972 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:23,505 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:23,981 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:24,748 INFO L93 Difference]: Finished difference Result 795 states and 1004 transitions. [2020-08-27 21:42:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:42:24,749 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-27 21:42:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:24,755 INFO L225 Difference]: With dead ends: 795 [2020-08-27 21:42:24,755 INFO L226 Difference]: Without dead ends: 596 [2020-08-27 21:42:24,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-27 21:42:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-27 21:42:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 534. [2020-08-27 21:42:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-08-27 21:42:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 617 transitions. [2020-08-27 21:42:24,864 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 617 transitions. Word has length 79 [2020-08-27 21:42:24,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:24,864 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 617 transitions. [2020-08-27 21:42:24,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:42:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 617 transitions. [2020-08-27 21:42:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-27 21:42:24,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:24,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:24,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:42:24,870 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:24,870 INFO L82 PathProgramCache]: Analyzing trace with hash 754253541, now seen corresponding path program 1 times [2020-08-27 21:42:24,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:24,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842314081] [2020-08-27 21:42:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,211 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:25,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:42:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 21:42:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:42:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-27 21:42:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-27 21:42:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-27 21:42:25,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842314081] [2020-08-27 21:42:25,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:25,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:42:25,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982562249] [2020-08-27 21:42:25,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:42:25,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:25,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:42:25,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:42:25,616 INFO L87 Difference]: Start difference. First operand 534 states and 617 transitions. Second operand 11 states. [2020-08-27 21:42:26,679 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-27 21:42:27,354 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:29,585 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-27 21:42:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:31,436 INFO L93 Difference]: Finished difference Result 1040 states and 1284 transitions. [2020-08-27 21:42:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 21:42:31,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-27 21:42:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:31,442 INFO L225 Difference]: With dead ends: 1040 [2020-08-27 21:42:31,442 INFO L226 Difference]: Without dead ends: 660 [2020-08-27 21:42:31,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-27 21:42:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-08-27 21:42:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 618. [2020-08-27 21:42:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-27 21:42:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 733 transitions. [2020-08-27 21:42:31,579 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 733 transitions. Word has length 154 [2020-08-27 21:42:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:31,579 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 733 transitions. [2020-08-27 21:42:31,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:42:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 733 transitions. [2020-08-27 21:42:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-27 21:42:31,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:31,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:31,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:42:31,583 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:31,583 INFO L82 PathProgramCache]: Analyzing trace with hash -205804435, now seen corresponding path program 1 times [2020-08-27 21:42:31,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:31,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765848438] [2020-08-27 21:42:31,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:31,963 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:42:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 21:42:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-27 21:42:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:42:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-27 21:42:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-27 21:42:32,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765848438] [2020-08-27 21:42:32,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:32,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:42:32,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266015175] [2020-08-27 21:42:32,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:42:32,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:32,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:42:32,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:32,241 INFO L87 Difference]: Start difference. First operand 618 states and 733 transitions. Second operand 12 states. [2020-08-27 21:42:32,954 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:33,244 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:33,543 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:34,282 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:34,590 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:34,867 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:36,180 INFO L93 Difference]: Finished difference Result 1241 states and 1528 transitions. [2020-08-27 21:42:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:42:36,184 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-27 21:42:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:36,189 INFO L225 Difference]: With dead ends: 1241 [2020-08-27 21:42:36,189 INFO L226 Difference]: Without dead ends: 647 [2020-08-27 21:42:36,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:42:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-08-27 21:42:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 608. [2020-08-27 21:42:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-27 21:42:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 720 transitions. [2020-08-27 21:42:36,329 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 720 transitions. Word has length 143 [2020-08-27 21:42:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:36,330 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 720 transitions. [2020-08-27 21:42:36,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:42:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 720 transitions. [2020-08-27 21:42:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-27 21:42:36,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:36,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:36,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:42:36,335 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:36,335 INFO L82 PathProgramCache]: Analyzing trace with hash 677704555, now seen corresponding path program 1 times [2020-08-27 21:42:36,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:36,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093467726] [2020-08-27 21:42:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,739 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:42:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 21:42:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-27 21:42:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:36,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:42:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-27 21:42:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-27 21:42:37,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093467726] [2020-08-27 21:42:37,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:37,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:42:37,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48113385] [2020-08-27 21:42:37,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:42:37,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:42:37,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:42:37,031 INFO L87 Difference]: Start difference. First operand 608 states and 720 transitions. Second operand 10 states. [2020-08-27 21:42:38,085 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:38,383 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:42:38,684 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:38,969 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:40,008 INFO L93 Difference]: Finished difference Result 1115 states and 1379 transitions. [2020-08-27 21:42:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:42:40,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-27 21:42:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:40,014 INFO L225 Difference]: With dead ends: 1115 [2020-08-27 21:42:40,015 INFO L226 Difference]: Without dead ends: 531 [2020-08-27 21:42:40,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:42:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-27 21:42:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 503. [2020-08-27 21:42:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-27 21:42:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 592 transitions. [2020-08-27 21:42:40,183 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 592 transitions. Word has length 143 [2020-08-27 21:42:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:40,184 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 592 transitions. [2020-08-27 21:42:40,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:42:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 592 transitions. [2020-08-27 21:42:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-27 21:42:40,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:40,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:40,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:42:40,189 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:40,190 INFO L82 PathProgramCache]: Analyzing trace with hash 744245076, now seen corresponding path program 1 times [2020-08-27 21:42:40,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:40,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489934488] [2020-08-27 21:42:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,567 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:42:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:42:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:42:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-27 21:42:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-27 21:42:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-27 21:42:40,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489934488] [2020-08-27 21:42:40,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:40,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:42:40,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875220010] [2020-08-27 21:42:40,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:42:40,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:40,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:42:40,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:42:40,883 INFO L87 Difference]: Start difference. First operand 503 states and 592 transitions. Second operand 15 states. [2020-08-27 21:42:41,690 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:42,515 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:43,584 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:43,961 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:44,292 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:44,613 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:44,996 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:45,317 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:45,962 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-27 21:42:46,614 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-27 21:42:47,647 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:47,950 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:48,302 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:48,616 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:49,446 INFO L93 Difference]: Finished difference Result 1337 states and 1633 transitions. [2020-08-27 21:42:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-27 21:42:49,447 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-27 21:42:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:49,453 INFO L225 Difference]: With dead ends: 1337 [2020-08-27 21:42:49,453 INFO L226 Difference]: Without dead ends: 858 [2020-08-27 21:42:49,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-27 21:42:49,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-27 21:42:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 816. [2020-08-27 21:42:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-27 21:42:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 943 transitions. [2020-08-27 21:42:49,630 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 943 transitions. Word has length 147 [2020-08-27 21:42:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:49,631 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 943 transitions. [2020-08-27 21:42:49,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:42:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 943 transitions. [2020-08-27 21:42:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-27 21:42:49,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:49,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:49,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:42:49,634 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:49,635 INFO L82 PathProgramCache]: Analyzing trace with hash 857110512, now seen corresponding path program 1 times [2020-08-27 21:42:49,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:49,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360025691] [2020-08-27 21:42:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,000 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:42:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-27 21:42:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-27 21:42:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-27 21:42:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-27 21:42:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:42:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-27 21:42:50,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360025691] [2020-08-27 21:42:50,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:50,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:42:50,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924865731] [2020-08-27 21:42:50,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:42:50,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:50,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:42:50,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:42:50,214 INFO L87 Difference]: Start difference. First operand 816 states and 943 transitions. Second operand 11 states. [2020-08-27 21:42:50,814 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:53,032 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:53,350 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:53,687 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:54,030 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:54,334 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:54,956 INFO L93 Difference]: Finished difference Result 967 states and 1196 transitions. [2020-08-27 21:42:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:42:54,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-08-27 21:42:54,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:54,963 INFO L225 Difference]: With dead ends: 967 [2020-08-27 21:42:54,963 INFO L226 Difference]: Without dead ends: 964 [2020-08-27 21:42:54,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-27 21:42:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-08-27 21:42:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 816. [2020-08-27 21:42:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-27 21:42:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 940 transitions. [2020-08-27 21:42:55,164 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 940 transitions. Word has length 151 [2020-08-27 21:42:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:55,165 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 940 transitions. [2020-08-27 21:42:55,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:42:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 940 transitions. [2020-08-27 21:42:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-27 21:42:55,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:55,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:55,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-27 21:42:55,168 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:55,169 INFO L82 PathProgramCache]: Analyzing trace with hash -671566746, now seen corresponding path program 1 times [2020-08-27 21:42:55,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:55,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950832716] [2020-08-27 21:42:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,587 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:55,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:42:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:42:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:42:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:42:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-27 21:42:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:42:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-27 21:42:55,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950832716] [2020-08-27 21:42:55,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:55,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:42:55,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043326434] [2020-08-27 21:42:55,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:42:55,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:55,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:42:55,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:55,877 INFO L87 Difference]: Start difference. First operand 816 states and 940 transitions. Second operand 12 states. [2020-08-27 21:42:56,469 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186